private void PrepareHeadersResponse(HeadersSyncBatch headersSyncBatch, LatencySyncPeerMock syncPeer, IBlockTree tree)
{
if (headersSyncBatch != null)
{
long startNumber = headersSyncBatch.StartNumber;
if (_maliciousByShiftedOneBack.Contains(syncPeer))
{
startNumber++;
TestContext.WriteLine($"{_time,6} | SYNC PEER {syncPeer.Node:s} WILL SEND SHIFTED MESSAGES ({startNumber} INSTEAD OF {headersSyncBatch.StartNumber})");
}
else if (_maliciousByShiftedOneForward.Contains(syncPeer))
{
startNumber = Math.Max(0, startNumber - 1);
TestContext.WriteLine($"{_time,6} | SYNC PEER {syncPeer.Node:s} WILL SEND SHIFTED MESSAGES ({startNumber} INSTEAD OF {headersSyncBatch.StartNumber})");
}
Keccak hash = tree.FindHash(startNumber);
if (hash == null)
{
TestContext.WriteLine($"{_time,6} | SYNC PEER {syncPeer.Node:s} CANNOT FIND {headersSyncBatch.StartNumber}");
return;
}
int requestSize = headersSyncBatch.RequestSize;
if (_incorrectByTooLongMessages.Contains(syncPeer))
{
requestSize *= 2;
TestContext.WriteLine($"{_time,6} | SYNC PEER {syncPeer.Node:s} WILL SEND TOO LONG MESSAGE ({requestSize} INSTEAD OF {headersSyncBatch.RequestSize})");
}
else if (_incorrectByTooShortMessages.Contains(syncPeer))
{
requestSize = Math.Max(1, requestSize / 2);
TestContext.WriteLine($"{_time,6} | SYNC PEER {syncPeer.Node:s} WILL SEND TOO SHORT MESSAGE ({requestSize} INSTEAD OF {headersSyncBatch.RequestSize})");
}
BlockHeader[] headers = tree.FindHeaders(hash, requestSize, 0, false);
if (_invalidBlocks.ContainsKey(syncPeer))
{
for (int i = 0; i < headers.Length; i++)
{
if (_invalidBlocks[syncPeer].Contains(headers[i].Number))
{
TestContext.WriteLine($"{_time,6} | SYNC PEER {syncPeer.Node:s} WILL SEND AN INVALID BLOCK AT {headers[i].Number}");
headers[i] = Build.A.Block.WithDifficulty(1).TestObject.Header;
}
}
}
if (headers.Length > 3 && _maliciousByRepetition.Contains(syncPeer))
{
headers[^ 1] = headers[^ 3];
public BlockHeader[] FindHeaders(Keccak hash, int numberOfBlocks, int skip, bool reverse)
{
return(_blockTree.FindHeaders(hash, numberOfBlocks, skip, reverse));
}
public BlockHeader[] FindHeaders(Keccak hash, int numberOfBlocks, int skip, bool reverse) => _wrapped.FindHeaders(hash, numberOfBlocks, skip, reverse);
